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Diffstat (limited to 'framework/src/onos/providers/null/src/main/java/org/onosproject/provider/nil/TreeTopologySimulator.java')
-rw-r--r-- | framework/src/onos/providers/null/src/main/java/org/onosproject/provider/nil/TreeTopologySimulator.java | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/framework/src/onos/providers/null/src/main/java/org/onosproject/provider/nil/TreeTopologySimulator.java b/framework/src/onos/providers/null/src/main/java/org/onosproject/provider/nil/TreeTopologySimulator.java new file mode 100644 index 00000000..2c049333 --- /dev/null +++ b/framework/src/onos/providers/null/src/main/java/org/onosproject/provider/nil/TreeTopologySimulator.java @@ -0,0 +1,77 @@ +/* + * Copyright 2015 Open Networking Laboratory + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.onosproject.provider.nil; + +import static com.google.common.base.Preconditions.checkArgument; + +/** + * Tree topology with hosts at the leaf devices. + */ +public class TreeTopologySimulator extends TopologySimulator { + + private int[] tierMultiplier; + private int[] tierDeviceCount; + private int[] tierOffset; + + @Override + protected void processTopoShape(String shape) { + super.processTopoShape(shape); + tierOffset = new int[topoShape.length]; + tierMultiplier = new int[topoShape.length]; + tierDeviceCount = new int[topoShape.length]; + + deviceCount = 1; + + tierOffset[0] = 0; + tierMultiplier[0] = 1; + tierDeviceCount[0] = deviceCount; + + for (int i = 1; i < topoShape.length; i++) { + tierOffset[i] = deviceCount; + tierMultiplier[i] = Integer.parseInt(topoShape[i]); + tierDeviceCount[i] = tierDeviceCount[i - 1] * tierMultiplier[i]; + deviceCount = deviceCount + tierDeviceCount[i]; + } + } + + @Override + public void setUpTopology() { + checkArgument(tierDeviceCount.length > 0, "There must be at least one tree tier"); + super.setUpTopology(); + } + + @Override + protected void createLinks() { + int portOffset = 1; + for (int t = 1; t < tierOffset.length; t++) { + int child = tierOffset[t]; + for (int parent = tierOffset[t - 1]; parent < tierOffset[t]; parent++) { + for (int i = 0; i < tierMultiplier[t]; i++) { + createLink(parent, child, i + portOffset, 1); + child++; + } + } + portOffset = 2; // beyond first tier, allow for up-links + } + } + + @Override + protected void createHosts() { + for (int i = tierOffset[tierOffset.length - 1]; i < deviceCount; i++) { + createHosts(deviceIds.get(i), hostCount); + } + } +} |